The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

One woman's lifelong collection is on display in this unassuming house on an Icelandic fjord.

Surrounded by ash fields in Iceland, an impossibly verdant valley looks like something out of a fairytale.

This fairytale-like structure is the last turf church ever constructed in Iceland.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

A little-visited waterfall in an otherworldly landscape.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The most powerful waterfall in all of Europe.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

A restaurant with an extensive Irish whiskey bar also has several first editions of famous works by Irish authors.

This Bronze Age tomb is the centerpiece of a clearing within a beautiful Irish forest.

The house where the writer spent his formative years.

A stunning Victorian abbey and walled garden on a lakefront.

The home of Ireland's last leprechauns is officially protected by the European Union.

A spectacular hidden beach in Ireland has the dark, disturbing nickname of "Murder Hole Beach."

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This basilica is dedicated to two saints, one of which is known more for his famous quote.

Famous landmarks and structures from across Italy fill this miniature park.

The relics of one of Jesus' 12 apostles are enshrined in this Italian Basilica.

This ancient trail climbs the mountain where a Latin League cult worshipped Jupiter, its main deity.